Re: Disks for informix

Firstly you need to know what portions of these disks have already been allocated. I normally start by producing a map of each drive. This is best done by using the output of onstat -d and mapping the portions of each disk that have been allocated. But you do need to know how big each disk is. As to whether or not you need an offset at the beginning of each drive that is a different question. regards Malcolm ----- Original Message ----- From: "Geezer From The Freezer" <Geezer@Freezer.com> To: <informix-list@iiug.org> Sent: Thursday, August 14, 2003 11:47 AM Subject: Disks for informix > I might have asked this a while back but cannot find it anywhere > > I have some filesystems in /dev/vx/rdsk/datadg named as such:- > > disk1-a-1 disk1-a-7 disk1-b-4 disk2-a-1 disk2-a-7 disk2-b-4 > disk1-a-2 disk1-a-8 disk1-b-5 disk2-a-2 disk2-a-8 disk2-b-5 > disk1-a-3 disk1-a-9 disk1-b-6 disk2-a-3 disk2-a-9 disk2-b-6 > disk1-a-4 disk1-b-1 disk1-b-7 disk2-a-4 disk2-b-1 disk2-b-7 > disk1-a-5 disk1-b-2 disk1-b-8 disk2-a-5 disk2-b-2 disk2-b-8 > disk1-a-6 disk1-b-3 disk1-b-9 disk2-a-6 disk2-b-3 disk2-b-9 > > > I would like to add one of these to an existing database > to give it more space. How do I tell if I need to use an > offset?? sending to informix-list

Here is what I want to know I have a dbspace called dbs3 - here is its chunks: Chunks address chk/dbs offset size free bpages flags pathname 17a2a950 4 2 0 250000 7 PO- /informix/disk1-a-5 17a2b9f0 4 2 0 250000 0 MO- /informix/disk1-b-5 17a2b3d0 16 2 0 250000 3 PO- /informix/disk2-a-5 17a53710 16 2 0 250000 0 MO- /informix/disk2-b-5 17a2b4b0 17 2 0 250000 1 PO- /informix/disk3-a-3 17a537f0 17 2 0 250000 0 MO- /informix/disk3-b-3 17a2b590 18 2 0 250000 3 PO- /informix/disk4-a-3 17a538d0 18 2 0 250000 0 MO- /informix/disk4-b-3 17a2b670 19 2 0 250000 5 PO- /informix/disk5-a-3 17a539b0 19 2 0 250000 0 MO- /informix/disk5-b-3 17a2b750 20 2 0 250000 52927 PO- /informix/disk1-a-6 17a53a90 20 2 0 250000 0 MO- /informix/disk1-b-6 I have a disk: disk2-a 18G split like this: disk2-a-1 2G #used disk2-a-2 2G #used disk2-a-3 2G #used disk2-a-4 2G #used disk2-a-5 2G #used disk2-a-6 2G disk2-a-7 2G disk2-a-8 2G disk2-a-9 867M I want to add disk2-a-6 (and it's mirror disk2-b-6) to chunk dbs3 my other disks partitions are supposed to be 2Gb in size too but when doing onstat -d (as above) they show as 250000 - this confuses me.